by Anders Brownworth
Taking another look at Software Radio, this time with the Ettus Research E100, we create a data tunnel and send a network over it. The E100 includes an entire Linux machine within the device so the need for an external computer is gone. We can simply use the internal Linux machine to route packets and control the radio. Two E100s are shown connecting to each other and granting Internet access to a small WiFi Access Point. We use GNURadio’s tunnel.py (from the examples directory) which creates a tunnel device called gr0. Adding an IP and configuring a network to route through it is all that is needed to get this going.
E100 hardware is available from ettus.com/ for roughly $1,600.00 each. Parts list: E100, RFX900, VERT900